Detective Robert Dewhurst, a member of the squad, told CNN in July that several detectives were still on the case and that people with information may speak many years later for many reasons, such as feeling safer after moving to a new area where they don't see the person responsible every day.

Sometimes people "want to get it off their chest," said Dewhurst.

For months after Baby Hope's body was found, police went back to the site hoping whoever was responsible, driven by guilt, had left some type of memorial that would have helped police.

Baby Hope, two years after she was found, was laid to rest in a donated plot. She was buried in a white dress bought by a detective's wife.